Razor-stropping machine.



J. R. DIEVENDORF. RAZOR STROPPING MACHINE. APPLIOATION FILED JUNE 8, 1908 Patented May 18,1909.

2 sums-s11 J. R. DIEVENDORP. RAZOR STROPPING- MACHINE.

APPLICATION FILED JUNE 8. 190a.

Patented May 18, 1909.

UNITED STATES OFFICE.

JAY R. DIEVENDORF, OF FULTON, NEW YORK.

RA ZOR-STROPPING MAGHINE.

To all whom it may concern:

Be it known that I, JAY R. DIEVENDORF, of Fulton, in the county of Oswe o, in the State of ,New York, have inventet new and useful Improvements in Razor-Stropping Machines, of which the following, taken in connection with the accom anying drawings, is a full, clear, and exact escription.

'This invention relates to certain improvements in raz'or stro ping machines, in which one or more. osci latory razor-holders are mountedupon a reciprocatory carriage and move along and in-contact with a suitable razor strop, the razor holders" being intermittingly oscillated by the movement of the carriage to reverse the position of the razor at the end of each stroke, and thereby draw said razor back foremost along the strop.

The primary object is to provide mechanism for stropping the razor under substan tially the same movement as it would be given by hand in the usual manner.

Anot er object is to provide means whereby a plurality of razors may be stropped at the some time.

A further object is to gradually reduce the stroke or movement of the carriage and to automatically stop it after a predetermined number of strokes. In other words, I have sought to produce a motor-operated razor stropping machine which will be practically automatic in its action, at least, to the extent of automatically reversing the razor at each end of the stroke of the carriage and in stopping the carriage after a predetermined number of strokes or rcciprocatory movements.

l n the drawings Figure l is a top plan of a razor stropping machine embodying the various features of my invention showing an electric motor for driving the carriage and also showing the motor-controlling circuit diagrammatically, the stop mechanism being omitted. Fig. 2 is a longitudinal vertical sectional View taken on line 2 2, Fig. 1. Fig. 3 is an enlarged transverse sectional view taken on line 3---3, Fig. I. Fig. 4 is an enlarged top plan of a portion of the frame and carriage seen in Fig. 1, showing particularly the stop-monlzrolling mechanism. Figs. 5, 6, and 7 are enlarged sectional views la on respectively on lines 5 5,- it -7-7-, Fig. I.

In carrying; out the objects stated, one or more, in this instance two rock shafts are Specification of Letters Patent.

Application filed June 8, 1908.

'above and in close a, and i radially from the tubular Patented May 18, 1909.

Serial No. 487,828.

mounted in a horizontal position, one in advance of the other, in a horizontally movable carriage 2 which is reciprocated along fixed guide-rods -3-, each rock-shaft being provided with one or more, in this instance two, razor-holders -'4 located at o posite sides of the guides 3- and adapted to receive and temporarily retain the razors, as 5-, which are movable along underlying strops -6.

Each rock-shaft 1- is provided substantially midway itsends with a pinion 7 rigid thereon' and meshin with a straight toothed rack 8 which is slidablo on a fixed lengthwise bar 9 midway between and preferably in a plane below the guide rods T3' These rods 3 and 9 are secured at their ends to cross bars 10, which together with the rods 3- and 9-, constitute a supporting frame adapted to be secured to a table or other available support for carrying the strep -6 and other movable parts of the ma chine.

The carriage 2 comprises parallel tubular sleeves mounted with an easy sliding fit u on the guide-rods 3 and. connected at ticir ends by cross-bars ll, thus forming a rigid carriage frame in which the rock-shafts -1- proximity to the guide rods 3.

I preferably provide each end of the earriage with a air of cross-bars 1l-, those of each pair ing locatedat op msite sides of and in the same horizontal one as the adjacent rock-shalt so as to eml iraee the in tervening pinion --7, and at the same time form suitable abutments l'or the'ad just-able limiting stops presently described.

Each rock-shaft lis n-ovided at its opposite ends with a razor c amping device consisting of. spring jaws ]2 which are mounted in tubular heads -'l3, the shank of the razor being ada ted to be inserted between said jaws and e amped in lace by a set screw-l4-- whi|e the handle 0 the razor is deflected at an angle through the slot in the side of the head -13- and'is held in ilaee between spring jaws I5, the latter lieing secured to a post 16-- projecting head 13-. 'lhcse clamping heads l3.- are rigidly secured to the adjacent ends of the corresponding rock-shalt l-- by keys or pins l7-,

are journaled directly 9 ill] through an arc of slightly more than 180 so as best seen in l ig. 3, and operate to hold the razors in fixed relation to the rock-shalt -1 and to draw the razor blades length wise of and a 'ainst the strop '6--- and to reverse said blhdes at the end of each stroke of the carriage.

Then the rock-shafts l-- are provided at its ends with two razor-holders or clamps a corresponding number of, in this instance two, strops are used running lengthwise of the mai supporting frame para lel with and equidistant from the bars -3-- corresponding to the distance ot the razor blades from said bars, the ends oi the strops being yieldingly secured to the outer ends of the framebars bysuit-able springs 18 which serve to maintain the strop under cmnparatively high tension, and at the same time. permits. said strop to yield slightly under pressure of the razor-blades while the latter 1 are being drawn back and forth upon the same.

The rack 8 which meshes with both of the pinions 7* is irovided with a tubular or perforated base fitted and slidable upon the center guide-rod '9- and is provided with end heads 20 having apertures for receiving the uide'rods 3 and addition i ally guiding t e rack -8- in its reeiprocatory movement, and also against turning upon the center rod --9.

The length of the carriage 2 from end to end is somewhat less than the distance between the end heads -20 of the rack -8-- to allow a limited endwisc movement of the rack relatively to the carriage for the purpose of reversing the position of each razorlade relatively to the strop at the end of each stroke of the rack. 'ihis clearance between the ends of the carriage Z and heads 20 is adjustable to'permit a partial rotation of the razor-supporting shafts as to cause the cutting edge of thc'razoit'o be brought llatwise into close contactwith the strop at each reversal of position, such adjustment being closely regulated by means of adjusting screws 2lwhich are movable in threaded apertures in the heads --20- and are adapted to engage the adjacent cross bar 11 of the carriage. 'lhese adjusting screws 2l, therefore, not only limit the degree of rotation of the rock-shafts aml razors mounted thereon, but also impart sliding movement to the carriage as the rack t -8- is rcci )rocated.

Any suitable means may be. em iloyed for reciproeatine, the rack ---S-- am I For this purpose 1 have shown an electric motor 22-- as provided with a disk -225--- having an eccentric pin 24--- which moves in a slotted lever carrying a toothed segment -26---, thcglattir meshing with a toothed rod --27- whichin turn, is guided in one of the end bars 1 U- ,ol' the main l l l raine and is rigidly connected to the adjacent end head ---2U- of the rack 8-, said eccentric and lever being adjusted to give the desired movement to the rack for roeking the razor blade through substantially one-hall revolution at the end of each stroke, and movinp sail. blade a limited distance along and tlatwise against the strop,

The distance from outside to outside ot-the heads .2()--- ot' the rack 8-- is somewhat less than the distance between the, crossbars --lt)-- ol' the main sup )ortingg frame to aflord ample clearance for t 10 movement of the rack and carriage to give the desired rotation of the razor-blades and to move them longitudinally some distance along and flatwise against the strops, producing substantially the same action as would be produced by hand in the usual manner.

In order that the. machine may be as nearly automatic in its action as ossible without re uiring .the careful watc tnlness of an atten ant, suitable means is rovided l'o'r automatically lessening the rocking movement of the razor holders after a predetermined number of strokes or reciprocatory movements of the carriage-relatively to the strep, and for this )urpose I providea ravity stop 30 wide is guided in a suita lc upright 3 lrising from the carriage 2 and is temporarily suspended immediately above the ccntr'al ortion of the carriage by a screw ,--32 w ich enters a central aperture -33-- in the stop, said stop being slightly longer than the distance from outside to outside of the stops or abutments l1 and is provided with pendent arms 34-- adapted to enter between the adjustable stops -21 and adjacent sides of the carriage when the stop 30- is released hy the turning of the screw 32ltherein in a. manner hereinafter described, thereby interposing the thickness of the stop arms -34 between the adjustable stops 21 and adjacent abutments ;11- to reduce or lessen the arc of rocking movement of the razor holders, thereby producim, a light finishing stroke of the razors upon the strops after a predetermined numbenof movements back and torth lengthwise of said stl'ops. This screw is journaled in a. suitable bracket 35-- connecting the upper ends of the guides --3l-, and secured to said screw is a ratchet wheel "36- as best seen in Figs. 2. 3, and 4.-

A lever -37--- is tulc-rumcd upon a reducing portion of the screw above the ratchet wheel 36- and is provided at one end with a pawl 38- ada )tcd to enga' c the teeth of the ratchet-wheel 36--, saii lever being actuated against the action of the spring 3!) at each. l'orward stroke of the carriagc by means of a stop '4U which is adjustabl secured by aset screw -4l m egree of the ttlljtlt't'nt end head -20 of the rack ntents of the carriage before releasing' the tion oftie machine after a predetermined riage carrying the razor holders lengthwise of thereby the switch til .8, the stop -----4()---- beillg adjustcd so as to operate the lever to rotate the ratchetwheel --36 one or more tootli-spaecsat a time at each movenieot ol' the carriage toward said stops, thereby unsm'cwing the screw -32----- l'roln the stop 3(l---- and allowing the latter to drop by gravity with its pendent arms .'%4 between the adjustable stops -2I- and adjacent. ab'uliurnts -l1.

The stop 3()'---- is normally suspended able stops 2tbut is gradually moved downward along the guides --3l-- at curb movement of the carriage --2--- toward the stop -'40, the number of strokrs or reciprocal movements of the carriage bc'l'oro the release of the stop ----'30--- depending somewhat in )011 the length of the screw 32-- and a so upon the adi'lstinent ol' the stop 40' which may be ill. jns'ted to allow a predetermined number of rwiprm'al moresome distance above the plane of the od uststo 30-.

also n'ovide means for stopping the ar--.

number of reciprocal movements oi therarthe strops, said means consislingin this instance, of a rat ehet-whecl -lfiand operating )awl -46'- which ismounled on a lever and actuated intermiltinglyagainst the action of the spring T45? by a movable abutment --4 9'- which is adjustably secured by a set screw -5()---- to the adjacenthead '20 of the sliding rack S-'. -This sliding l'lL('l\ it will be remembered is actuated by a motor .22- through the medium of a connecting rod --27-. 'lhe ratchetewheel, -45 is provided ,with a radially projecting arm --fi0;---- which .after a predetermined number of movements of the ratchet-wheel is broughtinto engagement withand o was an electric switclrmember 6| for brea ring the circuit to the electric motor -2i2', thereby cutting off the mower and stqppin the machine. This rate let-wheel is movei one or more tooth spares at a time, according to the. adjustment of the arm 49 so that after. a predetermined number of movmnents of the rack 44-wand carriage n t-lialed 1 is o'pencd l; cutoll' power and thereby slopthc umthe motor ehine. v

in operation, the shanks ol' the razor-,' blades are inserted in their res a-c-tivc holdl ers and clamped in place by the set screws l4- with their handles pri'rjecting tbrougrli radial slots in the holders 13' and hold in this position by the springjaws 15 The stop --30---- is screwed by-hand in place it Hill 1 the screw 32 and the electric switch ---61 -is closed whereupon the rack 8 is roeiproeated back and forth by the cccenl ric -23-- and segmental rack J(i--- acliug:

' the carriage.

u )0 the toothed connectin rod --27---. 'l lis reci )rocal movement 10' the rack imparts roe ing movement to the razor-holders 4-- through praetically hinlf a revolution, thus .brin ing the blade from one llatwise position with its back edge moving in the d irection of the carriage to thefrererse position when the llliHOlllll'lt of the; carriage is reversed, the razors being reversed at the be :ginnin ole-tell return stroke of the rack while t re carriage is actuated back and forth by'the engagemmt of the adjustingstops --2l-;- with the adjacent cross bars 11- of At. eaeh movement of the carriage in one direct ion the screw --82-- is actuated or partially unscrewed by the action of the stop arm -40- upon the ratchet operating member ----3T-, such movement being repeated until the stop -3()- is relcased by the screw, whereupon said stops drop by gravity into locking position with its arms -34 bet ween the innerends of the adjusting screws 2l and adjacent cross bars ---11-' of the carriage, thus lessening the rocking movement of the razor holders and atl'ordmg a lighter pressure of the razor blades'uj'mn the strop. In like manner, the

ratchet-wheel v45 is operated by the stop -49-- at 'eaeh movement of the carriage or rack ---.8-rin one dirertiun to cause the arms --(i()-- to open the switch 61- atter-a predetermined number of movements of the earriage back and forth, thus cutting off the motor mwer and stopping the machine automaticall v. I

It is desirable to shift the strop a slight distance laterally during the. stropping operation to prevent wearing of the sfrop in the same place, and also to prevent undue abrasion of any particular part of the edge of the razor blade by any abradantwhich may lodge on the strop, and for this purlpose l have provided automatic menus for s iiltiiu the lstro laterally a slightdistance at ear 1 end of tile stroke ol l'he razor holders. said means comprising inthis instance an arm on one or both of the heads 2dada and to engage and operate a lever -7l as t W rack ---8----- is rcci irocal'cd, said lever -7l-- being l'ulcrunual on the axis of a ratchet wheel -7'l--- and is provided with a pawl 73----- l'or engaging and rotating the ratchet wheel onc tooth space ata time.

5 liigidly ronneelcd to [his ratchet wheel is an eccentric Til which rides between and against a pair of opposite pins or shoulders 74 the latter being secured to a laterally movablebar 75 carrying the adjacent ends of tlic sl rops liso that as the eccenlrlc 7 is rotated b the rotation of the ratchet wheel 7;- the bar 75 and strops (i will be shifted a slight distance lal orally rclal ircly lo the razor holders.

\\ hat I claun is: v I. in a razorslropping muclunc, a rcciprolllJ ill)

catory' toothed rack;actuatin r means for the rack, an oscillatory razor holilor actuated in ,reverse directions by therark as the holder is moved back and forth, and a carriage for the razor holder actuated by the rack.

2. In a razor stropping machine, a stationary strop, a reciprocating carriage movable lengthwise of the strop, an oscillatory razor holder on the carriage, reci )rocatr'iry means for oscillating the razor holoer in reverse directions, and adjustable means actuated by the recipiocatory means for shifting the carriage.

i In a razor stropping machine, a reel rocatory rack, actuatmgmeans for the rao a reci rocatory carria e actuated by the rack, sai rack having a imited movement inde pendent of the carriage, a rock-shaft on the carriage, a razor holder on the rock shaft, and a pinion on the rock shaft meshing with the rack whereby the razor holder, is oscillated during a limited movement of the rack independently of the carriage.

4. In a razor stroppin machine, a rooi r0- catory carriage, an osci lator'y razor ho der on the carriage, a strep extending lengthwise of the movable carriage, a reciprocatory driving member, actuating means for the drivin member, said driving member having a iinited movement independent of the carriage, means actuated by said driving member for rocking the razor holder during such independent movement, and connection sbetween the driving Iiiemberand carriage for reciprocating thelatter.

5.. In a razor stropping machine, a strop, a

reciprocatory carriage, a rock shaft on the carriage having a pinion and a razor holder thereon, a reciprocatoiy rack engaging the pinionand having a limited movement independent of the carriage, and adjustable means actuated by the rack for engaging and reciprocating the carriage.

6. In a razor stropping machine, a strep, a razor holder means for moving the razor holder. lengthwise of the strap, additional means actuated by the first namcd-mcans for rockin the razor holder in reverse directions at tie ends of-its movement lengthwise of the stro and adjustable means For limiting the rocliing movement of the razor holder.

7. In a razor stroppiiig machine, a strop, a razor holder, means for moving one of the parts back and forth relatively to the other, additional means actuated by the first named means for rocking the razor support in reverse/directions at the ends of movement of the reciprocatory part.

uzznoz 8. in a razor strop iing machine, a strep, a razor holder, means for moving one of the parts hack and [orth relatively to the other,

additional means actuated by the first named moans ior rocking the razor support in reverse directions at the ends of movement of the rcciprocatory part, and automatic iiioans -for lessening the degree of rocking movement of the razor holder after a predetermined number of strokes of the reciprocatory part.

9, In a razor stropping machine, a strep, a razor holder, means for moving one of the parts back and-forth relatively to the other, additional means actuated by the first named means for rocking the razor support in reverse directions at the ends of movement of the reciprocatory part, and automatic means for stopping the movement of the rcciprocator part after a predetermined number 0 strokes. T

'10. In a razor stropping machine, a strap, a razor holder, means for moving one of the parts back and forth relatively to the other,

additional means actuated by the first named means for rocking the razor support in reverse directions at the ends of movement of the reciprocato-ry part, and automatic means for lessening the degree of rocking movement of the razor holder after a predetermined number of st okes of the reciprocatory part, and automatic means for stopping the movement of the reciprocatory part after a predetermined number of strokes.

11. In a razor stropping machine, a razor strop, a razor holder, means for movin the razor holder back and forth lengthwise o the strop, additional means for oscillating the razor holder in reverse directions at the end of each stroke, and automatic means for lessening the rocking movement of the razor holder after a predetermined number of strokes back and forth along the strep.

12. hi a razor stropping machine, a. strop, a razor holder, means for moving the razor holder back and forth lengthwise of the strop additional means actuated b the first named means for rocking the razor iolder in IBVBI'SO directions at the ends of its rcciprocatory IHOVPlIlO-Ilt, and automatic means for stopping the movement of the razor holder after a prcdi-itcrminod number of strokes.

In witness whereof I. have hereunto set my hand this 3d day of June 1908.

Il/iaar 'li. S'roo'r, li-mai Ii. SEARLE. 

